Route Calculation 1-10
Route Calculation
The most up-to-date road information and
regulation data possible have been used for
the maps and information used in this system.
However, subsequent road changes may
cause the information to differ from the actual
conditions, and inappropriate guidance may be
given. Be sure to drive according to the actual
traf c conditions.
Not all roads are subject to the recommended
route guidance.
The calculated route is only one example of a
road that reaches the destination, which the
system calculated by taking into account road
types and traf c conditions. It is not necessarily
always the best route.
Not all ferry routes are necessarily stored in the
data. Further, even if ferry routes are prioritized
they are not necessarily used in the route.
The route selection is a comprehensive
judgement based on factors such as the road
type, distance and road width, but this does
not mean that the best route is always selected.
Think of the route as only one example of many
possible routes. The route guidance is performed for the roads
subject to the route guidance that are the
nearest to the destination or way point. For
this reason, an inappropriate route may be
displayed if the set route includes a location
where many roads are concentrated together,
such as at an interchange. Further, if the
destination or way point becomes far away from
the intersections of roads subject to the route
guidance, a route may be displayed that passes
the destination or way point.
Traffic lanes in both directions are separately
input for wide roads or roads with central
dividers. If a destination (way point) is set in this
kind of position, a route may be selected that
passes and then returns to the destination (way
point).
The rst guidance location is the road nearest to
the starting position (vehicle).
The nal guidance location is the road nearest
to the location set as the destination.
If while driving along the route seems very
indirect, it is possible that a route has been set
in the direction opposite to the current vehicle
direction.
The guidance route may result in the vehicle
being on the opposite side of a river or station
from that which is desired. If this happens,
move the destination near to the desired road. Sometimes it will not be possible to avoid toll
roads or ferry routes, when there are no other
suitable routes.
If three recommended routes do not exist, the
same route may be repeated.
Sometimes the enlarged intersection map will
not be displayed immediately after the route
calculation, or due to other conditions.
